Increase the volume of a video with ffmpeg
by lucmove from LinuxQuestions.org on (#5KJDW)
I used this command line to increase the volume of a video:
Code:$ ffmpeg -i input.mkv -c:v copy -af volume=12 louder.mkvIt worked fine, but the embedded subtitles became a lot smaller. That doesn't really bother me, but for the sake of education, why does that happen and how could the font size have been preserved?
TIA
Code:$ ffmpeg -i input.mkv -c:v copy -af volume=12 louder.mkvIt worked fine, but the embedded subtitles became a lot smaller. That doesn't really bother me, but for the sake of education, why does that happen and how could the font size have been preserved?
TIA